Self-heating sadiron



0. SPAHR.

SELF HEATING SADIRON. APPLICATION FILED APR-6, 1920.

1,399,813, Patented Dec. 13, 1921.

' WIT M58858 "WEI/70H A TTORNEYS -T all whom it may concern UNITED STATES or'ro SPAHR, or PHILADELPHIA, PENNSYLVANIA, ssre on To s'rPvAusE e s IRON 00;, or PHILADELPHIA, PENNSYLVANIA, A ooRPoaA'rIoN or PENNSYLVANIA.

, SELF-HEATING sAnraoN.

Application filed April 6,

Be it known that I, OTTO SPAHR, a citizen of the United States, and a resident of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Self-Heating Sadirons, of which the following is a specification.

My invention relates to self-heating sad irons and has for its object to provide such irons with an improved hinged or pivoted. cover construction and with an efficient and simple locking means whereby said cover is locked in its closed position to the body and is readily unlocked therefrom when it is desired tomove said cover to its open position. The details of my invention will be fully set forthin the description hereinafter and the features of novelty willbe pointed out in the appended claims.

In the accompanying drawings which illustrate an exampleof my invention without defining its limits, Figure l'is a plan view of an iron embodying my invention; Fig. 2 is a side elevation thereof; Fig. 3 is a cross section on the line 33 of Fig. 1, and Figs. 4, 5, 6 and 7 are detail views illustrating variations of my invention.

'As shown in the drawing the iron, which maybe of any conventional construction common to self-heating irons, comprises a hollow body 10 which inthe example shown- I is provided in its bottom with a channel 11 extending lengthwise of the iron and con-, nected with the atmosphere by means of passages 12 extendingtransversely throug said bottom as shown in Fig.3.

At its upper edgethe body in the illustrated form is provided with end projections 13 and lugs H and 15 located intermediate, thereof and opposite each other whereby openings 16 are formed through which the products of combustion may readily escape from the iron during use thereof.

A burner 17 of any suitable type islocated within the body 10 and in the-illus- Specification of Letters Patent.

1920. Serial No. 371,679.

ing hinged on or pivotallyconnected with the lug 14 as shown at 21 in Fig, 3 and in this case 'is pivotally movable in a vertical planetoand from a closed. position.

The said cover is further provided with projections 22 on which a plate 23 preferably of metal possessing. an inherent-elasticity is positioned so asto be spaced from the cover whereby an air space 24 is formed be-1 tween said plate and cover throughout substantially the entirearea of the latter; The said plate 23 may be secured to the cover in any suitable manner as by screws 25 which may also serve to secure the handle 26 whereby the iron is manipulated to the 1 cover, washers or the like, 27 being preferably located about said-screws between said handle and said plate. In order that the cover 20 may be securely locked in its closed position I provide a latch or dog 28 which in the illustrated example comprises an integral extension of the plate 23 and in any case is carried thereby as a componentpart Patented. Dec. 13, 1921 subject to the inherent elasticity of saidplate. The latch or dog" 28 depends from the plate 23 at its periphery and projects over and beyond the edge of the cover20,

clined or curved inwardly to form a-nose or said latch or dog having its free end .in-

or dog 28 is arranged to cooperate with the lug 15 which projects upwardly from the body 10 or with an equivalent device to 'firmly lock the cover in its closed position,

said lug-15 being undercut or formed with an inclined surface 30 arranged to cooperate 'with the inclined nose-29 of thelatch 28 to I lock the cover 20 in its closed position; The

actuation of the locking elements when it'is' v desired to either lock the cover in itsclosed position orto open it. For instance, whenv the cover is closed as in Fig.3 and it is desired to open it all that is-necessaryis to exert a force on the handle 26 tending to swing said cover 20 on the pivot 21 relatively to the body to-an open position. This force will cause the inclined nose 29 of the latch 28 to ride along the inclined surface 30 of the lug and will consequently force the latch or dog-28 outwardly until the latter finally passes beyond'the lug l5 and thus leaves the cover free to be swung to its completely open position without difliculty. The outward swinging of the latch 28 will be resisted by its own resilient tension and by that of the plate 23 fromwhich said latch depends so that the force must be sufficient to overcome this tension, it being 'of' course understood. that the body of the iron is heldagainst movement in any suitable way during this operation, as by grasping the tube 19. As soon as the latch 28 has passed beyond the lug 15 the tension of said latch and of the plate 23 will be relieved and the latch or'dog 28 will move inwardly. 1n swinging the cover on its pivot in the opposite-direction to again close it, the nose 29 of the latch or dog 28 V will engage the lug l5 and as a downward pressure is exerted upon the handle 26 will beforced outwardly thereby against its own tension and that of the plate 23 and as the closing movement of the cover is continued the nose 29 will finally be snapped into engagementwith the lug surface 30 to again firmly lockthe cover against movement relatively to the body. The tension exerted by the plate 23 plus'that of the latch itself is sufiicient to maintain the nose 29 firmly seated against the undercut surface 30 under ordinary conditionsso that the iron may be freely lifted by the handle or otherwise manipulated during use without disengaging the locking means and without danger of causing an unintentional opening of the cover. The locking meansitself-needs no 111- cover and is actuated entirely through thedividual manipulation to lock or release the which insulates the tension means or more specifically the plate 23 against the heat radiating from the cover. The life'of the latch 28fis thereby materially increased and it re tains its inherent resiliency for a'maximum period of time,'this being true also of the plate 23. 'The inwardly inclined nose 29 of the'latch 2S and the inclined surface 30 of the lug 15" cooperate to maintain the locking.

device in a condition of maximum efliciency at all times. That 1s to say wear of these cooperating surfaces is automatically taken up and compensated for because of the form my hand.

thereof thus providing an eliicient locking means throughout the life of the iron. The

locking arrangement because of its physical characterlstlcs 1s economical to produce and does not require any special'skill eitherin the manufacture or the setting up and manipulation. It will be understood that the. cover 20 may be pivoted other than at the side of the iron and also that the type of locking arrangement herein shown and described .be' used in combination with covers pivotally. movable on the body in other ways than the one shown.

It will be further understood that the locking means mav be combined with iron bodies of other shapes and constructions than the one shown without affectingthe efficiency of said locking means.

; If desired the inwardly'inclined nose 29 of the latch 28 may be replaced by proje'ctions 29 and 29 as shown in Figs. 4 to 7 V inclusive in which case the lug "15 will be provided with proper cooperating recesses" arranged to receive said projections 29 and 29 Various changes in the specific forms,

shown and described maybe made within the scope of the claims without departing from the spirit of-my invention.

I claim v 1. A self-heating sad 1r0n comprising a body, a cover movably mounted thereon,-a I plate carriedby said coverm spac'ed'relation to the top surface thereof and constituting a heat-insulating device, a resilient locking member fixed upon and depending fromsaid plate and derlving'lts resiliency at least in part therefrom and means onsaid body 00- operating with said locking member to lock said cover in its closed position.

2. A self-heating sad ironcomprising a body, a cover pivo'tally mounted thereon, a

plate carried by said cover in spaced relation to .its upper surfaceand'having an inherent resiliency, a locking member fixed upon and depending from sald plate over an edge'of 1 said cover, said locking member being maintained in and returned to its locking-position by the'resiliency of 'said'plate, and-a recessed locking lug onsaid body cooperating with said locking member "to lock said cover in its closed position. y r

'3. A- self-heating sad "'ron comprising a body, a cover pivotallymounted thereonfa. plate CiLTIlQCl' bysaid coverin spaced rela tion to its upper surface and having an 'inherentresiliency,-a locking member comprislng an integral extens on of-said plate and depending from the periphery thereof, said 7 member having an inwardly turned nose at its free end, and a locking lug on said 7 2 body having an undercut surface cooperating with the nose of said locking member to lock said cover in its closed position.

In testimony whereof I have hereunto set OTTO SPAHR. 

